value unc_up unc_lo author ref method 4.97 0.290 0.290 Masiero 2014ApJ...791..121M NEATM 5.27 0.027 0.027 Masiero 2011ApJ...741...68M NEATM 5.58 1.330 1.330 Nugent 2016AJ....152...63N NEATM